Formatting and tweaks

[buckyroberts]

No description provided.

[buckyroberts]

Still having file issues:

File "/thenewboston_node/business_logic/blockchain/file_blockchain/__init__.py", 
line 52, in __init__
    raise ValueError('base_directory must be an absolute path')

[dmugtasimov]

@buckyroberts I prefer to stick to one commit per PR with few exceptions. This makes commit history more readable and easier to rebase on. Multiple commits can be squashed before making PR or you can just use git commit --amend when add more changes to the existing commit.

[dmugtasimov]

looks like a dirty hack. I would rather use os.path if pathlib is buggy